TOBIN MONTESSORI & VASSAL LANE UPPER LANE SCHOOL PROJECT
NPDES ID: MAG912065
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 11 effluent violations.
Violations
May 31, 2026
Copper, total recoverable
15% over limit
Discharged 0.02443 mg/L against a permitted limit of 0.02123265 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
154% over limit
Discharged 0.0132 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chloride, total recoverable
73% over limit
Discharged 399 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
107% over limit
Discharged 0.00768 mg/L against a permitted limit of 0.0037045 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
20% over limit
Discharged 12 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
79% over limit
Discharged 0.02443 mg/L against a permitted limit of 0.01366304 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
78% over limit
Discharged 890 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Cyanide, total [as CN]
156% over limit
Discharged 0.0133 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chloride, total recoverable
114% over limit
Discharged 492 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
100% over limit
Discharged 1000 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Copper, total recoverable
5% over limit
Discharged 0.02222 mg/L against a permitted limit of 0.02123265 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
30% over limit
Discharged 13 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total recoverable
139% over limit
Discharged 0.00884 mg/L against a permitted limit of 0.0037045 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
63% over limit
Discharged 0.02222 mg/L against a permitted limit of 0.01366304 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
160% over limit
Discharged 1300 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
206% over limit
Discharged 0.0159 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chloride, total recoverable
181% over limit
Discharged 647 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Cyanide, total [as CN]
200% over limit
Discharged 0.0156 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chloride, total recoverable
7% over limit
Discharged 921 mg/L against a permitted limit of 860 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride, total recoverable
300% over limit
Discharged 921 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
220% over limit
Discharged 1600 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, total [as N]
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
173% over limit
Discharged 0.0142 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chloride, total recoverable
106% over limit
Discharged 473 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
70% over limit
Discharged 850 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Cyanide, total [as CN]
85% over limit
Discharged 0.0096 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
109% over limit
Discharged 0.02849 mg/L against a permitted limit of 0.01366304 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
19% over limit
Discharged 0.00442 mg/L against a permitted limit of 0.0037045 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
34% over limit
Discharged 0.02849 mg/L against a permitted limit of 0.02123265 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride, total recoverable
11% over limit
Discharged 256 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, total [as N]
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
85% over limit
Discharged 0.02528 mg/L against a permitted limit of 0.01366304 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
20% over limit
Discharged 600 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
121% over limit
Discharged 0.0115 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
19% over limit
Discharged 0.02528 mg/L against a permitted limit of 0.02123265 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 8.5 SU against a permitted limit of 8.3 SU (MAXIMUM)
DMR, Limited - Numeric Violation
October 31, 2025
Chloride, total recoverable
19% over limit
Discharged 273 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
18% over limit
Discharged 590 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
700% over limit
Discharged 0.8 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
125% over limit
Discharged 0.0117 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
4% over limit
Discharged 0.00385 mg/L against a permitted limit of 0.0037045 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Solids, total dissolved [TDS]
20% over limit
Discharged 600 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
52% over limit
Discharged 0.0079 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Solids, total dissolved [TDS]
30% over limit
Discharged 650 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
10% over limit
Discharged 0.0057 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chloride, total recoverable
3% over limit
Discharged 236 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2025
Cyanide, total [as CN]
10% over limit
Discharged 0.0057 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chloride, total recoverable
21% over limit
Discharged 278 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
30% over limit
Discharged 650 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
Solids, total dissolved [TDS]
40% over limit
Discharged 700 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride, total recoverable
23% over limit
Discharged 282 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
19% over limit
Discharged 0.00442 mg/L against a permitted limit of 0.0037045 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
100% over limit
Discharged 0.2 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
Chloride, total recoverable
13% over limit
Discharged 260 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
100% over limit
Discharged 0.2 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
32% over limit
Discharged 660 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Chloride, total recoverable
31% over limit
Discharged 302 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
44% over limit
Discharged 720 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Solids, total dissolved [TDS]
54% over limit
Discharged 770 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride, total recoverable
54% over limit
Discharged 354 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
100% over limit
Discharged 0.2 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
17% over limit
Discharged 0.0061 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Cyanide, total [as CN]
37% over limit
Discharged 0.0071 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chloride, total recoverable
106% over limit
Discharged 474 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
500% over limit
Discharged 0.6 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
100% over limit
Discharged 1000 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
Chloride, total recoverable
43% over limit
Discharged 328 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
48% over limit
Discharged 740 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
20% over limit
Discharged 12 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
73% over limit
Discharged 0.00899 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Cyanide, total [as CN]
17% over limit
Discharged 0.0061 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
10% over limit
Discharged 0.02337 mg/L against a permitted limit of 0.02123265 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
12% over limit
Discharged 560 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
71% over limit
Discharged 0.02337 mg/L against a permitted limit of 0.01366304 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Chloride, total recoverable
21% over limit
Discharged 278 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
28% over limit
Discharged 640 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Acetone
25% over limit
Discharged 0.01 mg/L against a permitted limit of 0.00797 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
12% over limit
Discharged 560 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
12% over limit
Discharged 560 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Iron, total recoverable
0% over limit
Discharged 0.35820002 mg/L against a permitted limit of 5.00000024 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 10 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0.00503 mg/L against a permitted limit of 0.104 mg/L (DAILY MX)
DMR, Limited - Overdue
Hydrocarbons, total petroleum
0% over limit
Discharged 4 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Chromium, trivalent total recoverable
0% over limit
Discharged 0.01 mg/L against a permitted limit of 0.32300002 mg/L (DAILY MX)
DMR, Limited - Overdue
Iron, total recoverable
0% over limit
Discharged 0.35820002 mg/L against a permitted limit of 1.00000005 mg/L (MO AVG)
DMR, Limited - Overdue
Nickel, total recoverable
0% over limit
Discharged 0.01375 mg/L against a permitted limit of 0.65874771 mg/L (DAILY MX)
DMR, Limited - Overdue
Copper, total recoverable
0% over limit
Discharged 0.00433 mg/L against a permitted limit of 0.02123265 mg/L (DAILY MX)
DMR, Limited - Overdue
Chloride, total recoverable
18% over limit
Discharged 272 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Overdue
Chloride, total recoverable
18% over limit
Discharged 272 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phthalates, total
0% over limit
Discharged 0.005 mg/L against a permitted limit of 0.19000001 mg/L (DAILY MX)
DMR, Limited - Overdue
Solids, total dissolved [TDS]
34% over limit
Discharged 670 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Naphthalene
0% over limit
Discharged 0.000238 mg/L against a permitted limit of 0.02 mg/L (DAILY MX)
DMR, Limited - Overdue
Chloride, total recoverable
18% over limit
Discharged 272 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Total Group I Polycyclic Aromatic Hydrocarbons
0% over limit
Discharged 0.00005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Overdue
Acetone
63% over limit
Discharged 0.013 mg/L against a permitted limit of 0.00797 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Acetone
0% over limit
Discharged 0.013 mg/L against a permitted limit of 7.97000038 mg/L (DAILY MX)
DMR, Limited - Overdue
E. coli, colony forming units [CFU]
0% over limit
Discharged 2 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Overdue
BTEX
0% over limit
Discharged 0.001 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Overdue
Phenol
0% over limit
Discharged 0.03 mg/L against a permitted limit of 1.08000005 mg/L (DAILY MX)
DMR, Limited - Overdue
Zinc, total recoverable
0% over limit
Discharged 0.0063 mg/L against a permitted limit of 0.17175849 mg/L (DAILY MX)
DMR, Limited - Overdue
Mercury, total recoverable
0% over limit
Discharged 0.0002 mg/L against a permitted limit of 0.000739 mg/L (DAILY MX)
DMR, Limited - Overdue
Methyl tert-butyl ether [MTBE]
0% over limit
Discharged 0.01 mg/L against a permitted limit of 0.07 mg/L (DAILY MX)
DMR, Limited - Overdue
Nickel, total recoverable
0% over limit
Discharged 0.01375 mg/L against a permitted limit of 0.07331338 mg/L (MO AVG)
DMR, Limited - Overdue
Copper, total recoverable
0% over limit
Discharged 0.00433 mg/L against a permitted limit of 0.01366304 mg/L (MO AVG)
DMR, Limited - Overdue
Lead, total recoverable
0% over limit
Discharged 0.001 mg/L against a permitted limit of 0.09506382 mg/L (DAILY MX)
DMR, Limited - Overdue
Turbidity
0% over limit
Discharged 200 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Overdue
Turbidity
0% over limit
Discharged 200 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
0% over limit
Discharged 0.005 mg/L against a permitted limit of 0.022 mg/L (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 5 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0.1 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0.1 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Overdue
Zinc, total recoverable
0% over limit
Discharged 0.0063 mg/L against a permitted limit of 0.17036491 mg/L (MO AVG)
DMR, Limited - Overdue
Chloride, total recoverable
0% over limit
Discharged 272 mg/L against a permitted limit of 860 mg/L (DAILY MX)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 4 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 10 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.7 SU against a permitted limit of 8.3 SU (MAXIMUM)
DMR, Limited - Overdue
Turbidity
0% over limit
Discharged 200 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
34% over limit
Discharged 670 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Overdue
Solids, total dissolved [TDS]
34% over limit
Discharged 670 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
E. coli, colony forming units [CFU]
0% over limit
Discharged 2 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.024 MGD against a permitted limit of 0.288 MGD (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.7 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Overdue
Total Group II Polycyclic Aromatic Hydrocarbons
0% over limit
Discharged 0.0002387 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Overdue
Cyanide, total [as CN]
0% over limit
Discharged 0.005 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Overdue
Lead, total recoverable
0% over limit
Discharged 0.001 mg/L against a permitted limit of 0.0037045 mg/L (MO AVG)
DMR, Limited - Overdue
Antimony, total [as Sb]
0% over limit
Discharged 0.004 mg/L against a permitted limit of 0.20600001 mg/L (DAILY MX)
DMR, Limited - Overdue
August 31, 2024
Cyanide, total [as CN]
35% over limit
Discharged 0.007 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chloride, total recoverable
0% over limit
Discharged 211 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 10 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Overdue
Zinc, total recoverable
0% over limit
Discharged 0.00935 mg/L against a permitted limit of 0.17175849 mg/L (DAILY MX)
DMR, Limited - Overdue
Lead, total recoverable
0% over limit
Discharged 0.00181 mg/L against a permitted limit of 0.0037045 mg/L (MO AVG)
DMR, Limited - Overdue
Total Group II Polycyclic Aromatic Hydrocarbons
0% over limit
Discharged 0.000183 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.025 MGD against a permitted limit of 0.288 MGD (DAILY MX)
DMR, Limited - Overdue
Solids, total dissolved [TDS]
28% over limit
Discharged 640 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved [TDS]
28% over limit
Discharged 640 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Methyl tert-butyl ether [MTBE]
0% over limit
Discharged 0.01 mg/L against a permitted limit of 0.07 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 10 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Turbidity
0% over limit
Discharged 8.6 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Overdue
Chromium, trivalent total recoverable
0% over limit
Discharged 0.01 mg/L against a permitted limit of 0.32300002 mg/L (DAILY MX)
DMR, Limited - Overdue
BTEX
0% over limit
Discharged 0.001 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Overdue
Lead, total recoverable
0% over limit
Discharged 0.00181 mg/L against a permitted limit of 0.09506382 mg/L (DAILY MX)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 4 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Overdue
Cyanide, total [as CN]
0% over limit
Discharged 0.007 mg/L against a permitted limit of 0.022 mg/L (DAILY MX)
DMR, Limited - Overdue
Acetone
0% over limit
Discharged 0.011 mg/L against a permitted limit of 7.97000038 mg/L (DAILY MX)
DMR, Limited - Overdue
Mercury, total recoverable
0% over limit
Discharged 0.0002 mg/L against a permitted limit of 0.000739 mg/L (DAILY MX)
DMR, Limited - Overdue
E. coli, colony forming units [CFU]
0% over limit
Discharged 2 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Overdue
Nickel, total recoverable
0% over limit
Discharged 0.01693 mg/L against a permitted limit of 0.07331338 mg/L (MO AVG)
DMR, Limited - Overdue
Iron, total recoverable
0% over limit
Discharged 0.34540002 mg/L against a permitted limit of 1.00000005 mg/L (MO AVG)
DMR, Limited - Overdue
Antimony, total [as Sb]
0% over limit
Discharged 0.004 mg/L against a permitted limit of 0.20600001 mg/L (DAILY MX)
DMR, Limited - Overdue
Iron, total recoverable
0% over limit
Discharged 0.34540002 mg/L against a permitted limit of 5.00000024 mg/L (DAILY MX)
DMR, Limited - Overdue
Hydrocarbons, total petroleum
0% over limit
Discharged 4 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Limited - Overdue
Copper, total recoverable
0% over limit
Discharged 0.00681 mg/L against a permitted limit of 0.02123265 mg/L (DAILY MX)
DMR, Limited - Overdue
Naphthalene
0% over limit
Discharged 0.000183 mg/L against a permitted limit of 0.02 mg/L (DAILY MX)
DMR, Limited - Overdue
Phenol
0% over limit
Discharged 0.03 mg/L against a permitted limit of 1.08000005 mg/L (DAILY MX)
DMR, Limited - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0.01195 mg/L against a permitted limit of 0.104 mg/L (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.7 SU against a permitted limit of 8.3 SU (MAXIMUM)
DMR, Limited - Overdue
Chloride, total recoverable
0% over limit
Discharged 211 mg/L against a permitted limit of 860 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.7 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Overdue
Total Group I Polycyclic Aromatic Hydrocarbons
0% over limit
Discharged 0.00005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Overdue
Zinc, total recoverable
0% over limit
Discharged 0.00935 mg/L against a permitted limit of 0.17036491 mg/L (MO AVG)
DMR, Limited - Overdue
Cyanide, total [as CN]
35% over limit
Discharged 0.007 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Overdue
Cyanide, total [as CN]
35% over limit
Discharged 0.007 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
28% over limit
Discharged 640 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
0% over limit
Discharged 0.01693 mg/L against a permitted limit of 0.65874771 mg/L (DAILY MX)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0.1 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0.1 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Phthalates, total
0% over limit
Discharged 0.005 mg/L against a permitted limit of 0.19000001 mg/L (DAILY MX)
DMR, Limited - Overdue
Acetone
38% over limit
Discharged 0.011 mg/L against a permitted limit of 0.00797 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 5.5 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Overdue
E. coli, colony forming units [CFU]
0% over limit
Discharged 2 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Monitor Only - Overdue
Copper, total recoverable
0% over limit
Discharged 0.00681 mg/L against a permitted limit of 0.01366304 mg/L (MO AVG)
DMR, Limited - Overdue
July 31, 2024
pH
0% over limit
Discharged 8.87 SU against a permitted limit of 8.3 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Acetone
665% over limit
Discharged 0.061 mg/L against a permitted limit of 0.00797 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
24% over limit
Discharged 620 mg/L against a permitted limit of 500 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride, total recoverable
1% over limit
Discharged 232.5 mg/L against a permitted limit of 230 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
28% over limit
Discharged 0.128 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)